Fossilized shark teeth in bulk
Sharks Otodus
(oh-TOAD-us)
Lived about 60 million years ago, during the Paleocene Period. They were very large sharks, around 30 feet in length. Their fossilized teeth are large and triangular with prominent secondary cusplets. Shark teeth are the most common type of fossils. The average shark has 5 rows of teeth in each jaw (Bull Sharks have 50) and will lose (and replace) 35,000 teeth per year. There are three basic shapes of shark teeth according to their diet: crushing (short and round), grasping (long and pointy), and cutting (triangular with serrated edges). Most shark teeth fossils are from the Cenozoic Period (65 million years ago to present day).